Every 1-2 weeks they present a new task to encourage users to map in the following days. Everybody can suggest these tasks (blog@openstreetmap.de). Usually they are small POIs like a charging station or certain type of vending machine.

Switch heatings KW 1/2

Because large parts of Germany were coverd by snow for a few days, German OSM Blog asked mappers to map switch heatings. They can only be detected if there is snow between the rails. If the heating is on/existing, the snow melts at the switch while it keeps frozen at all other locations.

More information see:

Public transport changes due to anual timetable change KW 51/52

Every year at the second weekend in December timetables in Germany and many other European countries change. During this weekly task changes were done in OSM and public transport routes were changed to current Public Transport Version 2 mapping scheme.

The blog post includes a long description of current public transport mapping in German.

More information see:

Turning indications per lane KW 47/48 (2014-11-19 – 2014-11-30)

A more demanding task asks contributors to dive into the challenges of tagging more complex road intersections where road markings and/or signs indicate the direction in which a way or a lane will lead. This will help routing engines to actually use turning lanes.

Result: during the 2 weeks of that Wochenaufgabe, the number of addresses without street in germany decreased from 132047 to 41762. So there are now more than 90000 applicable adresses more in the OSM database.[1]

Post boxes KW 31/32 (2014-07-28 – 2014-08-11)

A post box (AE collection box, mailbox or drop box) is a facility to send out stamped postal items (letters & small goods).

ATMs KW 29/30 (2014-07-14 – 2014-07-28)

An automated teller machine (ATM), or automatic banking machine (ABM), or "cash machine", is a computerised telecommunications device that provides the clients of a financial institution with access to financial transactions in a public space without the need for a cashier, human clerk or bank teller.